Greetings,
Over the years using the xfce4 desktop, I would occasionally receive
SHM ERROR messages. As they never interfered (so's I could notice), I
always put off attempting to track the cause down. However, now having
performed a fairly major upgrade (~1yr since last), The error appears
to greatly affect KDE4 (used to use kde3) applications I run within
xfce4. The windows don't re-draw correctly, and I receive additional
errors,as well:
...
Resource id: 0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
Major opcode: 62 (X_CopyArea)
Resource id: 0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
Major opcode: 62 (X_CopyArea)
Resource id: 0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
Major opcode: 62 (X_CopyArea)
Resource id: 0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
Major opcode: 62 (X_CopyArea)
Resource id: 0x0
QCoreApplication::postEvent: Unexpected null receiver
...
After much searching, it would appear to be related to the
kern.ipc.shm* values.
pertinent details follow:
FreeBSD udns 8.4-STABLE FreeBSD 8.4-STABLE #3: Tue Jul 2 13:41:21 PDT 2013
root at udns:/usr/obj/usr/src/sys/AMD64 amd64
with 64Gb ram, and 3 cores, and nvidia-driver-308.88_1.
# ipcs -M
shminfo:
shmmax: 33554432 (max shared memory segment size)
shmmin: 1 (min shared memory segment size)
shmmni: 192 (max number of shared memory identifiers)
shmseg: 128 (max shared memory segments per process)
shmall: 8192 (max amount of shared memory in pages)
Thank you for all your time, and consideration.
--chris
On Fri, 12 Jul 2013 05:24:55 +0200, Chris H <bsd-lists at 1command.com> wrote:> Greetings, > Over the years using the xfce4 desktop, I would occasionally receive > SHM ERROR messages. As they never interfered (so's I could notice), I > always put off attempting to track the cause down. However, now having > performed a fairly major upgrade (~1yr since last), The error appears > to greatly affect KDE4 (used to use kde3) applications I run within > xfce4. The windows don't re-draw correctly, and I receive additional > errors,as well: > ... > Resource id: 0x0 > X Error: BadDrawable (invalid Pixmap or Window parameter) 9 > Major opcode: 62 (X_CopyArea) > Resource id: 0x0 > X Error: BadDrawable (invalid Pixmap or Window parameter) 9 > Major opcode: 62 (X_CopyArea) > Resource id: 0x0 > X Error: BadDrawable (invalid Pixmap or Window parameter) 9 > Major opcode: 62 (X_CopyArea) > Resource id: 0x0 > X Error: BadDrawable (invalid Pixmap or Window parameter) 9 > Major opcode: 62 (X_CopyArea) > Resource id: 0x0 > QCoreApplication::postEvent: Unexpected null receiver > ... > After much searching, it would appear to be related to the > kern.ipc.shm* values. > pertinent details follow: > FreeBSD udns 8.4-STABLE FreeBSD 8.4-STABLE #3: Tue Jul 2 13:41:21 PDT > 2013 > root at udns:/usr/obj/usr/src/sys/AMD64 amd64 > with 64Gb ram, and 3 cores, and nvidia-driver-308.88_1. > # ipcs -M > shminfo: > shmmax: 33554432 (max shared memory segment size) > shmmin: 1 (min shared memory segment size) > shmmni: 192 (max number of shared memory identifiers) > shmseg: 128 (max shared memory segments per process) > shmall: 8192 (max amount of shared memory in pages)My 9.1-STABLE amd64 with 4GB RAM has these default settings: ipcs -M shminfo: shmmax: 536870912 (max shared memory segment size) shmmin: 1 (min shared memory segment size) shmmni: 1024 (max number of shared memory identifiers) shmseg: 1024 (max shared memory segments per process) shmall: 131072 (max amount of shared memory in pages) Regards, Ronald.
On Fri, Jul 12, 2013 at 5:24 AM, Chris H <bsd-lists at 1command.com> wrote:> Greetings, > Over the years using the xfce4 desktop, I would occasionally receive > SHM ERROR messages. As they never interfered (so's I could notice), I > always put off attempting to track the cause down. However, now having > performed a fairly major upgrade (~1yr since last), The error appears > to greatly affect KDE4 (used to use kde3) applications I run within > xfce4. The windows don't re-draw correctly, and I receive additional > errors,as well: > ... > Resource id: 0x0 > X Error: BadDrawable (invalid Pixmap or Window parameter) 9 > Major opcode: 62 (X_CopyArea) > Resource id: 0x0 > ... > After much searching, it would appear to be related to the > kern.ipc.shm* values.$ cat /usr/ports/x11-toolkits/qt4-gui/pkg-message Qt paint engine makes common use of shared memory. To avoid MIT-SHM errors (i.e., blank windows), you probably need to raise shared memory limits in loader.conf(5). The following should be safe values for the KDE Plasma Desktop: kern.ipc.shmall=32768 kern.ipc.shmmni=1024 kern.ipc.shmseg=1024 -- Alberto Villa, FreeBSD committer <avilla at FreeBSD.org> http://people.FreeBSD.org/~avilla